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US 4,891,820 AGranted
Fast axial flow laser circulating system
AssigneeRofin-Sinar, Inc.
InventorsJoseph F. Rando, Dale E. Koop
Life of this patent
Estimating the term…
Abstract
A fast axial flow laser includes a vessel which houses heat exchangers and a pump which imparts the pumping action throughout the laser. Only one housing is necessary and this housing can also be used as an optical bench for the resonator. In one embodiment a positive displacement rotary pump is utilized and a retoreflector included to mount three fold mirrors. In the folded configuration the retroreflector provides angular stability in any two orthogonal planes parallel to the laser beam.
Claims11
A fast axial flow folded resonator cavity, comprising:
- a resonator mirror mounting member;
- a high reflector resonator mirror mounted to said resonator mirror mounting member;
- a resonator output mirror mounted to said resonator mirror mounting member positioned substantially parallel with respect to said high reflector resonator mirror;
- a retroreflector mounting member positioned opposite to said resonator mirror mounting member, said retroreflector mounting member including first, second and third planar mounting surfaces;
- at least two substantially parallel discharge-confining bore tubes extending from said resonator mirror mounting member to said retroreflector mounting member, said parallel discharge-confining bore tubes providing parallel beam paths;
- and
- first, second and third fold mirrors mounted to said first, second and third planar surfaces of said retroreflector mounting member and adapted to fold said beam paths substantially 180 degrees with respect to each other while providing angular stability for rotations of said retroreflector mounting member in any direction has been changed to "a first plane defined by said parallel beam paths, and angular stability in second and third planes which are substantially orthogonal to said first plane."
4 more elements
A fast axial flow folded resonator cavity, comprising:
- a resonator mirror mounting member;
- a high reflector mirror mounting member;
- a resonator mirror mounted to said resonator mirror mounting member;
- a high reflector mirror mounted to said high reflector mirror mounting member;
- a retroreflector mounting member positioned opposite to said resonator mirror mounting member, said retroreflector mounting member including first, second and third planar mounting surfaces;
- at least two substantially parallel discharge-confining bore tubes extending from said resonator mirror mounting member and said high reflector mirror mounting member to said retroreflector mounting member, said parallel discharge-confining bore tubes providing parallel beam paths;
- and
- first, second and third fold mirrors mounted to said first, second and third planar surfaces of said retroreflector mounting member and adapted to fold said beam paths substantially 180 degrees with respect to each other while providing angular stability for rotations of said retroreflector mounting member in any direction has been changed to "a first plane defined by said parallel beam paths, and angular stability in second and third planes which are substantially orthogonal to said first plane."
5 more elements
A fast axial flow folded resonator cavity, comprising:
- a resonator mirror mounting member;
- a high reflector mirror mounting member;
- a resonator mirror mounted to said resonator mirror mounting member;
- a high reflector mirror mounted to said high reflector mirror mounting member with said high reflector mirror being mounted substantially parallel to said resonator mirror;
- a retroreflector mounting member positioned opposite to said resonator mirror mounting member, said retroreflector mounting member including first, second and third planar mounting surfaces;
- at least two substantially parallel discharge-confining bore tubes extending from said resonator mirror mounting member and said high reflector mirror mounting member to said retroreflector mounting member, said parallel discharge-confining bore tubes providing parallel beam paths;
- and
- first, second and third fold mirrors mounted to said first, second and third planar surfaces of said retroreflector mounting member and adapted to fold said beam paths substantially 180 degrees with respect to each other while providing optical stability for rotations of said retroreflector mounting member in a first plane defined by said parallel beam paths, and angular stability in second and third planes which are substantially orthogonal to said first plane.
5 more elements
Dependencies are inferred from the claim text.